I liked Sludge a lot, back when I tried a sample bottle. It is rough on coils though. Now that I have a dripper, I will have to order more of it. Right now I need to build a stock of regular e juice, for my tanks. Then I can worry more about the dripper. Gunky is okay. Supper gunky where you can't get through a full Magma, or at least 3/4 is just a lot of trouble. If it is out of this world tasty, it might be worth it. But if it is just good, and not out of this world great, I don't want to fool with it. Sludge was in my first HHV order, in a tiny bottle.